January 27, 2026
4 min ReadCVE-2026-21858 (Ni8mare): Unauthenticated Remote Code Execution in Self-Hosted n8n
CVE-2026-21858 (Ni8mare) enables unauthenticated RCE in self-hosted n8n. Learn impact, exploitation flow, and how AppTrana WAAP blocks attacks from Day 0.








